SE-T-06Level 1 · Signal
Account sending malicious or phishing mail
- Threat
- Neutral
- Level 1 · Signal
A threat signal from email security: the person's own mailbox sent messages the gateway classed as phishing or malicious.
Classification
- Risk domain One of 9 areas of human risk, from social engineering to readiness and response. Every signal belongs to one.
- Evidence level
- Maturity practices One capability a program performs, scored on its own: See, Understand, Act, Prove, Govern and Culture.
- Leads to The kind of breach the evidence beneath it points toward, each anchored to a Verizon DBIR or VERIS pattern or an FBI IC3 category.
- NIST CSF 2.0
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- DE.CM-01
- MITRE ATT&CK
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- T1534
The definition, in detail
Definition
It usually means the account is already compromised and is being used against the person's contacts.
Example
A project manager's mailbox sends 300 shared-file invitations to clients at 2 a.m.; the gateway flags it and the SOC resets the account.
How it is measured
- Source
- Email security
- Subject
- Person
- Event
- email.malicious.sent
- Risk domain
- Social engineering
- Provenance
- Verizon DBIR, Framework research
How it is used
Programs count "Account sending malicious or phishing mail" per person from Email security and read it beside the other Social engineering signals; it feeds 0 cohorts, 1 sequence and 2 breach scenarios.
A "account sending malicious or phishing mail" record is evidence of what reaches the person (the threat side of the model). It says nothing on its own about what the person did.
Technical mappings
Framework mappings; validate for your use case.
Continue exploring
"Account sending malicious or phishing mail" (SE-T-06), Human Risk Management Framework v2.0.0, Living Security, CC BY 4.0. https://www.humanriskmanagement.com/taxonomy/signals/se-t-06-account-sending-malicious-or-phishing-mail
Part of the open HRM Taxonomy, CC BY 4.0. Download the taxonomy as JSON · Version history. This page describes one signal.
The initial assessment
Find your level.Then fix what matters.
18 questions, about 4 minutes and nothing to type before the result: your level, a score for each practice and three first playbooks, each Easy, Medium or Hard.